There have been three investigations about the population number of giant pandas in the wild in China.They estimated the population number of giant pandas mainl y by the bite size data in the feces of pandas.\;In 1999 and 2001,the authors studied the relationship between the bite size in f eces and the age at the China Research and Conservation Center for the Giant Pan da.More than 20 000 data was obtained,which was used to complete the statistical analysis and correlation analysis between the bite size and...